Информатика. Часть 2. Мойзес О.Е - 74 стр.

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74
формулам (5.37). Блок-схема параболической аппроксимации второго
порядка приведена на рис. 5.10.
Рис. 5.10. Блок-схема параболической аппроксимации
Начало
Ввод
n; x
0
,...,x
n
; y
0
,...,y
n
;
S1=0; S2=0; S3=0; S4=0; S5=0;
S6=0; S7=0;
a0=da0/d; a1=da1/d; a2=da2/d;
Вывод
a0, a1, a2
Конец
i =0, n
S1=S1+x
i
; S2=S2+x
i
2
; S3=S3+x
i
3
; S4=S4+x
i
4
;
S5=S5+y
i
; S6=S6+x
i
⋅
y
i
; S7=S7+x
i
2
⋅
y
i
;
d1=n
⋅
S2
⋅
S4+S1
⋅
S3
⋅
S2+S2
⋅
S1
⋅
S3
d2=S2
⋅
S2
⋅
S2+S3
⋅
S3
⋅
n+S1
⋅
S1
⋅
S4
dA01=S5
⋅
S2
⋅
S4+S1
⋅
S3
⋅
S7+S2
⋅
S6
⋅
S3
dA02=S2
⋅
S2
⋅
S7+S5
⋅
S3
⋅
S3+S1
⋅
S4
⋅
S6
dA11=n
⋅
S6
⋅
S4+S5
⋅
S3
⋅
S2+S1
⋅
S2
⋅
S7
dA12=S2
⋅
S2
⋅
S6+n
⋅
S3
⋅
S7+S1
⋅
S4
⋅
S5
dA21=n
⋅
S2
⋅
S7+S1
⋅
S6
⋅
S2+S1
⋅
S3
⋅
S5
dA22=S2
⋅
S5
⋅
S2+n
⋅
S3
⋅
S6+S1
⋅
S1
⋅
S7
d=d1-d2; da0=da01-da02;
da1=da11-da12; da2=da21-da22

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